go to steam game settings on Arma 2 Operation Arrowhead and go under betas and change to legacy then it should work i have to correct myself, the problem is currently Windows 11, have now reinstall my Pc back to Windows 10, it works and have no crash more 🙂
Edit: Here you can see more: https://steamcommunity.com/app/33930/discussions/1/3158705742079348752/?tscn=1635701143 the User "Nebgama" explains this a bit better